A Review on Potash Recovery from Different Rock …
Nepheline syenite is an igneous rock primarily made up of nepheline (Na, K) AlSiO4, sodium feldspar (albite, NaAlSi3O8) and alkali feldspar (orthoclase, microcline KAlSi3O8) without any free silica. In nepheline, potassium invariably substitutes for a portion of sodium. Some limited … See more